I purchased a 2005 X3 3.0. It has 2 issues, both seem common to this truck.

I am trying to tackle the easy one first: Replacement of the rear coil springs. I would like to buy a pair of springs that most closely duplicates the OEM ride without paying $175 a side for the part.

The price range seems to be any where from about $60 for the no name brand to $90 to $120 for the Suplex/Lesjofors. I read a lot about Chinese steel and German made . . .

I am wondering what he consensus is regarding these parts. Which parts are best to duplicate the OEM ride and easiest for the DIY guy?

On a related note what parts house is best for this BMW? For my domestic vehicles I have had great success with Parts Geek, they have the Lesjofors for 109.99 and the Suplex for 93.90 with free UPS ground.

I would check all of the vendors plus ebay. You would not believe the difference vendor to vendor on prices. I purchased mine from ebay original springs. My car is a sport though so the springs are a little more. My stealership wanted $254 per side. I got them off of ebay from another BMW dealership for $182 for the pair. I literally took a couple of minutes to change. I recommend changing the top and lower rubber while you are at it. My dealership wanted a total of $1400 to change rear springs, lower controls. I did it in less then two hours and it cost me less then $400. Do not buy chinese junk!